1178
Proceedings of the 18
th
International Conference on Soil Mechanics and Geotechnical Engineering, Paris 2013
6 ACKNOWLEDGMENTS
The authors thank Brazilian National Research Council
(CNPq) for the financial support that made possible this
research. They also thank CAPES for the MSc. scholarship
granted to the W. N. Sterck and PIBIC/UENF for the
scholarship granted to the A. B. Ribeiro.
7 REFERENCES
Briggs, L. J., and McLane, J. W., 1907, “The moisture equivalent of
soils.”
U.S. Bur. Soils Bull.
, 45, 23.
FIG 4. Comparison between SWRC from conventional methods fitted
by the Mualem-van Genuchten model and the small-scale centrifuge
method data for remolded young horizon (RY).
Corey, A.T., 1977, “Mechanics of heterogeneous fluids in porous
media.”
Water Resources Pubication,
Littleton, Colo.
Croney, D., Coleman, J.D., and Bridge, P.M., 1952, “The suction of
moisture held in soil and other porous materials”,
Department of
Scientific and Industrial Research, Road Research Technical
Paper
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Gardner, R. ,1937, “The method of measuring the capillary pressures in
small core samples.”
Soil Sci.
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Hassler, G.L., and Brunner, E. ,1945, “Measurement of capillary
pressures in small core samples.”
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Khanzode, R.M., Vanapalli, S.K., and Fredlund, D.G., 2002,
“Measurement of soil-water characteristic curves for fine-grained
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Canadian Geotechnical
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Russell, M.B., and Richards L.A., 1938, “The determination of soil
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Soil Science Society of
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3: 65–69.
Stephens, D.B.,1996, “Vadose zone hydrology.”
CRC Press, Lewis
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FIG 5 - Comparison between SWRC from conventional methods fitted
by the Mualem-van Genuchten model and the small-scale centrifuge
method data for undisturbed young horizon (UY).
Van Genuchten, M.T., 1980, “A closed form equation for predicting the
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5 CONCLUSIONS
From the research program involving evaluation of the SWRC
of undisturbed and remolded specimens of a young residual soil
from gneiss conducted it can be concluded that:
The SWRC determined using the proposed
methodology agreed well with the experimental data
obtained using conventional methods such as paper
filter method, suction plate extractor and porous plate
funnel indicating the excellent potential use of the
methodology for SWRC determination for studied
soils in a reduced time-frame.
The centrifuge methodology was able of determining
the SWRC with good accuracy up to suction
magnitudes of the order of 900 kPa.
